Broken Roads a Big Hurdle in Colorado Flood Recovery

Construction Teams Need to Reach Thousands of Damaged Homes

BOULDER, Colo.—As officials here grapple with the aftermath of massive floods this month, it has become clear that recovery hinges on fixing the hundreds of miles of washed-out roads.

Repairing the routes is critical to getting materials and construction teams to thousands of damaged or destroyed homes, businesses, power stations and sewage systems in the roughly 1,500-square-mile region scarred by the disaster, in which eight people...